US7493712B2 - Excavator tool quick attachment device - Google Patents

Excavator tool quick attachment device Download PDF

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Publication number
US7493712B2
US7493712B2 US10/571,634 US57163404A US7493712B2 US 7493712 B2 US7493712 B2 US 7493712B2 US 57163404 A US57163404 A US 57163404A US 7493712 B2 US7493712 B2 US 7493712B2
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US
United States
Prior art keywords
tool
attachment device
quick attachment
engaging means
excavator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime, expires
Application number
US10/571,634
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English (en)
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US20070199214A1 (en
Inventor
Patrick McCormick
Caroline McCormick
Martin Segarty
William Egenton
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Individual
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Publication of US20070199214A1 publication Critical patent/US20070199214A1/en
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Publication of US7493712B2 publication Critical patent/US7493712B2/en
Adjusted expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3618—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with two separating hooks
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/365—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with redundant latching means, e.g. for safety purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets

Definitions

  • the present invention relates to an excavator tool quick attachment device and more particularly to a safety mechanism for an excavator tool quick attachment device.
  • Pneumatic/hydraulic latches on quick attachment devices are well known and are generally mounted on a tool engaging portion which has two hooks, one of which is on each end of the device.
  • the excavator operator locates one of the hooks around the first pin of the tool and raises a dipper arm of the excavator.
  • the rams of the dipper arm are manipulated until the second hook is located adjacent the second pin of the tool and a pneumatic/hydraulic latch comprising a hydraulic/pneumatic piston connected between the attachment device and the latch is actuated to lock the second pin of the tool onto the quick attachment device.
  • the present invention provides an excavator tool quick attachment device for attaching a tool to a dipper arm of an excavator, the device comprising a body member with an engaging means at or about each end for engagement with two connecting pins disposed on a tool, the first engaging means being a movable engaging means, the device further comprising a drive means mounted between the body member and the movable engaging means for moving the movable engaging means between a tool pin engaging position and a tool pin releasing position, the second engaging means being a second movable engaging means normally biased into a tool pin engaging position by a biasing means, a control means mounted between the first movable engaging means and the second movable engaging means, wherein the control means acts on the second movable engaging means to overcome the biasing force only when the quick attachment device is inverted relative to a normal working position and the drive means is actuated, whereby the tool can not be released when it is in a normal working position in the event the drive means fails or is inadvertently actuated
  • the quick attachment device being in an inverted position is commonly referred to in the art as the crouched or valueless position.
  • control means comprises an adjustable length actuating assembly having a catch means to fix the length of the actuating assembly at a predetermined position when the quick attachment device is inverted relative to a normal working position and the drive means is actuated.
  • the use of mechanical components powered by an already present drive means reduces the complexity and cost of a secondary safety mechanism.
  • the actuating assembly is pivotally connected to both movable engaging means.
  • the actuating assembly is in two parts, the first part having a slot extending along a substantial portion of its longitudinal axis and the second part having two pins spaced apart along its length and extending laterally therefrom, the pins being formed for slidable engagement with the slot of the first part, allowing relative movement between the two parts, the pins movably holding the two parts together.
  • the catch means is provided by a notch on the slot which is located above the pins in any normal working position of the tool and the slot is located below the pins only when the quick attachment device is inverted relative to the normal working position.
  • the pins of the second part of the actuator assembly slide along the slot until the leading pin encounters the notch into which it drops under the force of gravity thereby fixing the length of the actuating assembly after which point continued stroke action of the drive means causes the actuating assembly to move the second movable engaging means away from the tool pin engaging position thereby releasing that tool pin.
  • the first movable engaging means is provided by a pair of latch hooks pivotally mounted on the body.
  • the second movable engaging means is provided by a lock pivotally mounted on the body.
  • the drive means is a double acting piston and cylinder unit.
  • the excavation tool quick attachment device includes a tilt mechanism by means of which the device can be titled about a longitudinal pivotal axis.
  • FIG. 1 is a perspective view of a first embodiment of a quick attachment device with a left side plate removed;
  • FIG. 1 a is a side view of the first embodiment of a quick attachment device mounted on a dipper arm of an excavator in a normal working position;
  • FIG. 2 is a second side view of the quick attachment device with a latch in an open position
  • FIG. 3 is a side view of the quick attachment device in an inverted position
  • FIG. 4 is a second side view of the quick attachment device in an inverted position showing the safety mechanism in an open position;
  • FIG. 5 is a detail view taken from the opposite side as the views of FIGS. 1 to 4 of the safety mechanism in a normal working position;
  • FIG. 6 is a second detail view of the safety mechanism of FIG. 5 in a second working position
  • FIG. 7 is a third detail view of the safety mechanism of FIG. 5 and FIG. 6 in an uncoupling position
  • FIG. 8 is a fourth detail view of the safety mechanism in an uncoupled position
  • FIG. 9 is a plan view of a second embodiment of a quick attachment device according to the invention incorporating a tilting mechanism
  • FIG. 10 is a first end view of the second embodiment
  • FIG. 11 is a side view of the second embodiment
  • FIG. 12 is a second end view of the second embodiment
  • FIG. 13 is a perspective view of the second embodiment showing the mechanism tilted 45 degrees in one direction;
  • FIG. 14 is a further perspective view of the second embodiment showing the mechanism tilted 45 degrees in the opposite direction.
  • FIG. 15 is a lower perspective view of the second embodiment showing the mechanism in a non-tilted position
  • FIG. 16 is an upper perspective view of the second embodiment with the mechanism in the non-tilted position.
  • FIGS. 1 to 4 show an excavator tool quick attachment device 1 mounted on an excavator dipper arm 2 and FIGS. 5 to 8 show detail views of the safety mechanism 21 mounted on the quick attachment device 1 .
  • the quick attachment device 1 is of the type having a dipper arm engaging portion 51 and a body portion 52 having receivers or mouths 12 , 14 for receiving tool pins 11 , 15 respectively.
  • the device 1 also has two latch plates 3 (one shown) spaced apart and being pivotally connected to the body portion 52 of the attachment device 1 by pivot pin 6 .
  • a hydraulic ram 20 is connected between heels 4 of the latch plates 3 and shaft 5 .
  • Actuation of the ram 20 causes the latch plates 3 to pivot about pin 6 locking or releasing tool pin 11 between a concave potion of the latch plates 3 and a concave portion of mouth 12 of the attachment device 1 .
  • the attachment device 1 has a second mouth 14 for engaging the other tool pin 15 at the opposite end of the device 1 .
  • a safety mechanism indicated generally by the reference numeral 21 is shown having a lock 22 pivotally mounted adjacent the mouth 14 and a two-part actuating assembly 23 .
  • a first part 24 of the actuating assembly 23 is pivotally connected to the lock 22 and the second part 25 of the actuating assembly 23 is pivotally connected to latch plate 3 .
  • the first part 24 of the actuating assembly 23 has a slot 28 extending along a substantial portion of its length.
  • the second part 25 has two pins 29 extending transversely therefrom and movably connecting the first and second parts 24 , 25 together with the pins 29 being formed for slidable movement along the slot 28 in response to actuation of the hydraulic ram 20 to pivot the latch plates 3 .
  • the slot 28 has a notch 32 above the pins 29 in a normal working position and below the pins 29 in the inverted position.
  • the latch plates 3 are pivoted into a pin 11 engaging position and lock 22 is biased into a pin 15 engaging position by a biasing element, such as a spring (not shown).
  • a biasing element such as a spring (not shown).
  • the latch plates 3 are pivoted into a tool pin 11 releasing position by the ram. This could be an intentional actuation or it could have come about as a result of ram failure or inadvertent actuation by an operator. Due to the forces of gravity acting on the free end of the second part 25 and the free end of the first part 24 of the actuating assembly 23 the pin 29 adjacent the free end of the second part 25 slides past the notch 32 .
  • the excavator tool quick attachment device 101 is provided with a safety mechanism 121 which is similar in construction and operation as the safety mechanism 21 of the first embodiment.
  • the excavator tool quick attachment device 101 additionally includes a tilt mechanism 150 by means of which the device can be tilted in two directions by approximately 45 degrees in each direction.
  • the tilt mechanism 150 comprises two hydraulically operated cylinders 151 and 152 which can tilt the device about longitudinal central pivot 155 .
  • the device 101 fitted to an excavator it can be used for more versatile operations, for example, grading and digging work at an angle such as in ditches, dykes an drains.
  • the operator can manoeuvre a tool around obstacles more readily within the device 101 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Shovels (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Making Paper Articles (AREA)
US10/571,634 2003-09-18 2004-09-20 Excavator tool quick attachment device Expired - Lifetime US7493712B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
IES2003/0685 2003-09-18
IE20030685 2003-09-18
IES2004/0194 2004-03-26
IE20040194A IES20040194A2 (en) 2003-09-18 2004-03-26 An excavator tool quick attachment device
PCT/IE2004/000128 WO2005026454A1 (en) 2003-09-18 2004-09-20 An excavator tool quick attachment device

Publications (2)

Publication Number Publication Date
US20070199214A1 US20070199214A1 (en) 2007-08-30
US7493712B2 true US7493712B2 (en) 2009-02-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/571,634 Expired - Lifetime US7493712B2 (en) 2003-09-18 2004-09-20 Excavator tool quick attachment device

Country Status (8)

Country Link
US (1) US7493712B2 (de)
EP (1) EP1676006B1 (de)
AT (1) ATE368775T1 (de)
CA (1) CA2539045C (de)
DE (1) DE602004007949D1 (de)
ES (1) ES2291940T3 (de)
IE (1) IES20040194A2 (de)
WO (1) WO2005026454A1 (de)

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US20090107015A1 (en) * 2005-07-05 2009-04-30 Yanmar Co., Ltd. Lock Device of Work Machine
US20100031539A1 (en) * 2008-08-07 2010-02-11 Jrb Attachments, Llc Spread-style coupler with supplemental safety lock
US20100061799A1 (en) * 2008-09-08 2010-03-11 Ian Hill Coupler with gravity operated safety device
US20100067982A1 (en) * 2006-09-13 2010-03-18 Ian Hill Coupler for excavators
US20100124453A1 (en) * 2008-11-20 2010-05-20 Jrb Attachments, Llc Coupler with secondary lock on front hook
US7779562B1 (en) * 2007-10-02 2010-08-24 Loveless Allen L Loader implement universal mount
US20100275474A1 (en) * 2006-10-26 2010-11-04 Michael Kevin Scheib Coupler
US20110010915A1 (en) * 2006-05-02 2011-01-20 Wedgelock Llc Safety Locking Device
US20110088795A1 (en) * 2009-10-16 2011-04-21 Hill Engineering Limited Control system for a hydraulic coupler
US20110091267A1 (en) * 2009-10-16 2011-04-21 Ian Hill Coupler
US20110313625A1 (en) * 2008-11-03 2011-12-22 Miller International Limited Coupler with coupling status sensors
US20110308056A1 (en) * 2008-11-03 2011-12-22 Jeremy Glen Doherty Improvements to work attachment assemblies
US20120093572A1 (en) * 2009-08-12 2012-04-19 Everdigm Corp. Attachment coupler for heavy machinery
US20120210614A1 (en) * 2009-11-02 2012-08-23 Mccormick Patrick Quick Hitch Coupler
US8403590B2 (en) 2010-03-31 2013-03-26 Ian Hill Coupler
US8585345B2 (en) 2010-03-26 2013-11-19 Paladin Brands Group, Inc. Coupler with pivoting front hook lock
US8690515B2 (en) 2009-09-17 2014-04-08 Gary Miller Fully automatic coupler for excavator arm
US9469965B2 (en) 2009-09-22 2016-10-18 Ian Hill Hydraulic coupler with pin retention system for coupling an attachment to a work machine
US20180066418A1 (en) * 2015-03-25 2018-03-08 Wedgelock Equipment Limited A Visual Indicator for a Coupler
US10184224B2 (en) * 2014-06-26 2019-01-22 Komatsu Ltd. Quick coupler
US10676324B2 (en) 2017-03-05 2020-06-09 Thomas A Weeks Plug and play tool connection

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US7648305B2 (en) 2007-02-08 2010-01-19 Cws Industries (Mfg.) Corp. Pin grabber coupler
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US7984575B2 (en) 2007-07-05 2011-07-26 Caterpillar Inc. Quick coupler assembly
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EP2159334B1 (de) 2008-08-29 2016-11-23 Riedlberger GmbH Kupplungsvorrichtung
GB2467380B (en) 2009-02-03 2010-12-22 Miller Int Ltd Fully automatic coupler for excavator arm
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GB2482515B (en) * 2010-08-04 2015-03-04 Miller Int Ltd Blocking bar
USD638448S1 (en) 2010-10-22 2011-05-24 Miller International Ltd. Machined pads on a coupler
USD638037S1 (en) 2010-10-22 2011-05-17 Miller International Ltd. Coupler
USD638039S1 (en) 2010-10-22 2011-05-17 Miller International Ltd. Coupler with tapered transitions
USD638038S1 (en) 2010-10-22 2011-05-17 Miller International Ltd. Lifting eye on a coupler
USD673982S1 (en) 2010-10-22 2013-01-08 Miller International Ltd. Operator-visible warning symbol on a coupler
GB201108376D0 (en) * 2011-05-19 2011-06-29 Shadowfiction Ltd An automatic quick hitch for an extractor
SE536061C2 (sv) * 2011-09-15 2013-04-23 Steelwrist Ab Framaxellåsning för redskapsfäste
DE102014116245B4 (de) 2014-11-07 2016-11-10 Bela Cseri Schnellwechseleinrichtung einer Arbeitsmaschine
DK178795B1 (en) 2015-08-24 2017-02-13 Tiltman Aps A rotary actuator for an excavator, a method for tilting an excavator tool and use of a rotary actuator
US9926685B1 (en) * 2017-05-01 2018-03-27 Pengo Corporation Adjustable coupler for work implement
KR101809005B1 (ko) * 2017-07-04 2017-12-15 황윤국 크레인 사용 안전유닛을 구비하는 버킷 링크
GB2568111A (en) * 2017-11-07 2019-05-08 Hayden James Quick hitch
GB2576486B (en) * 2018-06-25 2023-05-10 Miller Uk Ltd Coupler
CN118686244B (zh) * 2024-08-02 2025-12-16 江苏徐工工程机械研究院有限公司 工程机械快换装置和工程机械

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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CA2539045C (en) 2013-03-12
ATE368775T1 (de) 2007-08-15
US20070199214A1 (en) 2007-08-30
ES2291940T3 (es) 2008-03-01
WO2005026454A1 (en) 2005-03-24
IES20040194A2 (en) 2005-03-23
EP1676006B1 (de) 2007-08-01
EP1676006A1 (de) 2006-07-05
DE602004007949D1 (de) 2007-09-13
CA2539045A1 (en) 2005-03-24

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